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Abstract

Simple and useful approximations, valid at infrared wavelengths, to the equations for synchrotron radiation are presented and used to quantify the brightness and power advantage of current synchrotron radiation light sources over conventional infrared broadband laboratory sources. The Daresbury Synchrotron Radiation Source (SRS) and the Brookhaven National Synchrotron Light Source (vacuum ultraviolet) [NSLS(VUV)] storage rings are used as examples in the calculation of the properties of infrared synchrotron radiation. The pulsed nature of the emission is also discussed, and potential areas of application for the brightness, power, and time structure advantages are presented. The use of infrared free electron lasers and undulators on the next generation of storage ring light sources is briefly considered.

References

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Table I

Some Parameters of Storage Rings Used as Synchrotron Radiation Sources

NAME

LOCATION

Operational Status (12/7/82)

E GeV

ρ cm

Acλ

N

Trf ns

Torb ns

τBL ps

1 mA

W

U

FEL

CBS

SCRF

Washingtone USA

OP

0.24

83

336

2

08.8

17.5

1000

25

X

X

TANTALUS

Stoughton USA

OP

0.24

64

259

1

31.4

31.4

1000–5000

100

X

INS–SOR

Tokyo Japan

OP

0.3

110

228

7

8.3

57B

667

150

ACO

Orsay France

OP

0.55

111

37

2

36.7

73.5

400–1334

150

X

(BROKEN)

X

NSLS VUV RINGS

Brookhaven USA

OP

0.7

191

31

9

18.9

170.3

1000

500

UC

UC

X

VEPP 2M

Novosibirsk USSR

OP

0.67

122

23

12

5.0

59.9

167

100

X

BESSY

BerlinW.Germany

C

0.8

183

20

26 or 104

8.0 or 2.6

208.3

120

500

X

ALADDIN

Stoughton USA

C

1.0

208

11.6

15

19.7

295.0

1000

500

AECAE

Frascati Italy

OP

1.5

500

8.3

3

117

349.7

2000

100

OP

P (LADON) (Project)

VEPP-3

Novosibirsk USSR

OP

3.6

3600

4.3

19

1000

100

OP

OP

X

SRS

Daresbury UK

OP

2.0

556

3.9

160

2.0

320.5

200

370

OP

P

X

X

DCI

Orsay France

OP

1.8

382

3.7−

8

39.5

316.4

1000

500

PHOTON FACTORY

Tsukuba Japan

c

2.5

833

3.0

285

2.0

598.8

200

500

NSLS X-RAY RING

Brookhaven USA

UC

2.5

820

2.9

630

18.9

568.2

667

500

UC

DORIS

Hamburg W.Germany

OP

3.5

1220

1.6

481

2.0

961.5

333

100

P

X

X

X

SPEAR

Sanford USA

OP

4.0

1270

1.1

280

2.8

781.2

200

100

OP

OP

X

X

CESR

Cornell USA

OP

8.0

8800

0.96

1281

2.0

2560

167

100

X

X

Key:

OP

Operational

W

Wiggler

C

Commissioning

U

Undulator

UC

Under construction

FEL

Free Electron Laser

P

Planned

CBS

Coapton Back Scattering

X

: Not planned

Table II

Coupling of Parallel and Perpendicular Components (as a Percentage of the Total Vertically Integrated Distribution) as a Function of Wavelength and Vertical Angle for the SRS at Daresbury and the NSLS (VUV) at Brookhaven

Table III

Comparison of the Emittance Squared for a Blackbody (BB) Source and the NSLS VUV Ring in the Infrared Region and the Matching Efficiency PTO

λ(μm)

NSLS Flux ph/sec

BB Flux ph/sec

NSLS E2 cm2 sr

BB E2 cm2 sr

Etendue cm2 sr

BB Eff

NSLS Eff. 〈E〉

1

2.6 × 1014

1.4 × 1016

2.9 × 10−6

0.63

5 × 10−4

8 × 10−4

1

2.5

2.0 × 1014

7.2 × 1014

4.6 × 10−6

0.63

5 × 10−4

8 × 10−4

1

10

1.3 × 1014

1.8 × 1016

1.3 × 10−5

0.63

5 × 10−4

8 × 10−4

1

30

8.0 × 1013

2.6 × 1015

3.7 × 10−5

0.63

5 × 10−4

8 × 10−4

1

100

5.5 × 1013

2.5 × 1014

1.7 × 10−4

0.63

5 × 10−4

8 × 10−4

1

Tables (3)

Table I

Some Parameters of Storage Rings Used as Synchrotron Radiation Sources

NAME

LOCATION

Operational Status (12/7/82)

E GeV

ρ cm

Acλ

N

Trf ns

Torb ns

τBL ps

1 mA

W

U

FEL

CBS

SCRF

Washingtone USA

OP

0.24

83

336

2

08.8

17.5

1000

25

X

X

TANTALUS

Stoughton USA

OP

0.24

64

259

1

31.4

31.4

1000–5000

100

X

INS–SOR

Tokyo Japan

OP

0.3

110

228

7

8.3

57B

667

150

ACO

Orsay France

OP

0.55

111

37

2

36.7

73.5

400–1334

150

X

(BROKEN)

X

NSLS VUV RINGS

Brookhaven USA

OP

0.7

191

31

9

18.9

170.3

1000

500

UC

UC

X

VEPP 2M

Novosibirsk USSR

OP

0.67

122

23

12

5.0

59.9

167

100

X

BESSY

BerlinW.Germany

C

0.8

183

20

26 or 104

8.0 or 2.6

208.3

120

500

X

ALADDIN

Stoughton USA

C

1.0

208

11.6

15

19.7

295.0

1000

500

AECAE

Frascati Italy

OP

1.5

500

8.3

3

117

349.7

2000

100

OP

P (LADON) (Project)

VEPP-3

Novosibirsk USSR

OP

3.6

3600

4.3

19

1000

100

OP

OP

X

SRS

Daresbury UK

OP

2.0

556

3.9

160

2.0

320.5

200

370

OP

P

X

X

DCI

Orsay France

OP

1.8

382

3.7−

8

39.5

316.4

1000

500

PHOTON FACTORY

Tsukuba Japan

c

2.5

833

3.0

285

2.0

598.8

200

500

NSLS X-RAY RING

Brookhaven USA

UC

2.5

820

2.9

630

18.9

568.2

667

500

UC

DORIS

Hamburg W.Germany

OP

3.5

1220

1.6

481

2.0

961.5

333

100

P

X

X

X

SPEAR

Sanford USA

OP

4.0

1270

1.1

280

2.8

781.2

200

100

OP

OP

X

X

CESR

Cornell USA

OP

8.0

8800

0.96

1281

2.0

2560

167

100

X

X

Key:

OP

Operational

W

Wiggler

C

Commissioning

U

Undulator

UC

Under construction

FEL

Free Electron Laser

P

Planned

CBS

Coapton Back Scattering

X

: Not planned

Table II

Coupling of Parallel and Perpendicular Components (as a Percentage of the Total Vertically Integrated Distribution) as a Function of Wavelength and Vertical Angle for the SRS at Daresbury and the NSLS (VUV) at Brookhaven